From 18a333ec6bc9051ae7ec63a809d725c5c5f77046 Mon Sep 17 00:00:00 2001
From: Sergey Vlasov <sigprof@gmail.com>
Date: Wed, 3 Mar 2021 07:26:06 +0300
Subject: Add support for complementary outputs to the WS2812 PWM driver
(#11988)
---
drivers/chibios/ws2812_pwm.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
(limited to 'drivers')
diff --git a/drivers/chibios/ws2812_pwm.c b/drivers/chibios/ws2812_pwm.c
index 140120d488..e6af55b6b3 100644
--- a/drivers/chibios/ws2812_pwm.c
+++ b/drivers/chibios/ws2812_pwm.c
@@ -27,6 +27,15 @@
# error "please consult your MCU's datasheet and specify in your config.h: #define WS2812_DMAMUX_ID STM32_DMAMUX1_TIM?_UP"
#endif
+#ifndef WS2812_PWM_COMPLEMENTARY_OUTPUT
+# define WS2812_PWM_OUTPUT_MODE PWM_OUTPUT_ACTIVE_HIGH
+#else
+# if !STM32_PWM_USE_ADVANCED
+# error "WS2812_PWM_COMPLEMENTARY_OUTPUT requires STM32_PWM_USE_ADVANCED == TRUE"
+# endif
+# define WS2812_PWM_OUTPUT_MODE PWM_COMPLEMENTARY_OUTPUT_ACTIVE_HIGH
+#endif
+
// Push Pull or Open Drain Configuration
// Default Push Pull
#ifndef WS2812_EXTERNAL_PULLUP
@@ -247,7 +256,7 @@ void ws2812_init(void) {
.channels =
{
[0 ... 3] = {.mode = PWM_OUTPUT_DISABLED, .callback = NULL}, // Channels default to disabled
- [WS2812_PWM_CHANNEL - 1] = {.mode = PWM_OUTPUT_ACTIVE_HIGH, .callback = NULL}, // Turn on the channel we care about
+ [WS2812_PWM_CHANNEL - 1] = {.mode = WS2812_PWM_OUTPUT_MODE, .callback = NULL}, // Turn on the channel we care about
},
.cr2 = 0,
.dier = TIM_DIER_UDE, // DMA on update event for next period
--
cgit v1.2.3